Multiple Choice
If the spectrum of a distant galaxy is observed to have a calcium K absorption line that occurs at a wavelength of 500.4 nm,what is this galaxy's distance if the rest wavelength of this absorption line is 393.4 nm?
A) 950 Mly
B) 1,800 Mly
C) 2,300 Mly
D) 3,700 Mly
Correct Answer:
Verified
Correct Answer:
Verified
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